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    • 9. 发明授权
    • Camera focus indicator
    • 相机对焦指示
    • US4595272A
    • 1986-06-17
    • US277563
    • 1981-06-25
    • Dennis J. Wilwerding
    • Dennis J. Wilwerding
    • G02B7/28G03B17/20G03B7/08
    • G02B7/28G03B17/20
    • An indicator for use in an auto focus type camera, which produces an output signal of magnitude indicative of the amount the camera lens must move, and of a sign or characteristic indicative of the direction the camera lens must move in order to reach a desired focus position; the indicator comprising a plurality of light-emitting diodes a first group of which can only respond to a signal having the first characteristic and a second group of which can only respond to a signal having the second characteristic, but each of the detectors in both groups being responsive to signals of different magnitudes, so that upon the lighting of one of the light-emitting diodes, it can be determined how far the lens must move, and in what direction to achieve the desired proper focus position.
    • 用于自动聚焦型照相机中的指示器,其产生指示相机镜头必须移动的量的幅度的输出信号,以及指示相机镜头必须移动以便达到期望焦点的方向的符号或特征 位置; 所述指示器包括多个发光二极管,其第一组只能响应具有所述第一特性的信号,并且其第二组只能响应于具有所述第二特性的信号,但是两组中的每个检测器 响应于不同幅度的信号,使得在发光二极管之一的点亮时,可以确定透镜必须移动多远,以及在什么方向上实现期望的适当的聚焦位置。